Printing-press.



W. H. SMITH Q PRINTING PRESS. urmoul on 11.21) JULY 22, 1911.

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Patented Jan..21-, 1913.

Patented Jan.'21, 1913.

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Waller 19. 5 65127 UNITED sT Esr-AT NT "ornion WALTER H. SMITH, or minus, onto'j assrenon ro 'rnn'iasnnis AurottATIo 'rnnssf,

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Specification of-le-tters Patent.

, Application filed an as, 1911; Serial mort se;

To all whom it may concern Be it. known .that I, WALTER-H. SMITH, of Niles, in. the county of Trumbull and State'of Ohio, have invented'ce'rtain new and useful Improvements in Printing- Presses; and I do hereby declare the following to be a full, clear, and exact do scription ofthe invention, such as will enable others.- skilled in the art to which I it appertains to make and use the same.

The primary bject of this invention'is to,

. provide improved simple and highly effiforth and particularly pointed out in the pression has cient means for mechanically throwing'on the impression of a printingpress or numbering machine, or acombined printing press and numbering machine, the throwing on of the impression being properly timed in relation to the cooperating members of the printing couple. v I p The invention will be hereinafter fullyset claims. p In the accompanying draw1ngs,.F1gure 1 1s a view in side elevat-1on, parts being in section and other parts broken away or omitted. Fig. 2 is an enlarged view showing certain parts in the "position they occupy when the impression is about to be mechanically restored or untripped. Fig. 3 is a view .of the same parts showing them in the position they occupy when the press is in operation. Fig.' 1 shows the same parts in the position assumed after the im been tripped and before heing-set to untrip. Fig. 5 is a view of the "atchet which normally prevents the un-- tripping mechanism from being eifect-ive. Fig. 6 is 'a view in details.

Referring to the drawings, 1 designates the. impression cylinder; 2 a printing cylinder, and 3 a numbering cylinder. The two cylinders, 2 and 3, are shown as mounted in eccentric bearmgs lbetween which there is a toggle connection 5, the movement of which latter either'trips or untrips the 1mp'ression.

61s 'a spring-impelled shaft, an arm 7 of which is connected by a link 8 to the toggle connection 5 so|thatwhen the shaftis moved by its spring 9 the toggle will be broken, the parts being moved into the; dash and dot line position indicated in Fig. 1. The shaft 6 is normally restrained by a p 10 e gag a Harris and perspective of certainlatch collar 12 keyed on said shaft, and this pawl is designedto' be automatically disengaged from the collar n the event of any interruption in the feed. supply, the means shown for this purpose being conventionally .indicatedat' 13, -Fig.- 1,

and is substantially the same as that shown iii-Letters Patent No.'661,245 to Charles G.

J ohn F. McNutt, dated July 6,

For the purpose of enabling the imprescally at the proper time, I provide means which when set-will allow the spring-im pelled shaft its spring and thereby untrip the impression by reestablishing the toggle. The

Patented .'I n.,21,i-91s.

, ,65 sion to be untripped or restored mechanito be turned in opposition to means for. accomplishing this purpose may be widely varied, but that shown embodies a constantly-reciprocating pawl 15 which is designed to enter the single notch of a collar or ratchet 16 fast on shaft 6. This pawl is shown as being carried by a bellcrank lever 17 loose' on shaft 6 and connected' by a link 18 to a lever 19 which is reoiprocated by shaft 20 having the same number 'of'revolutions as the impression cylinder. I have.

shown this shaft as being driven by a train of gearing 21 from the impression cylinder.

The constantly reciprocating pawl 15 is intended toe'nter: the notch of'ratchet- 16 and turn shaft 6 only when the impression is to be untripped; and it is the purpose of my a continuously operating invention to prevent this from being effected until desired by the operator, who,

by releasing a retaining element, allows the with which is designed to engage a spr1ngheld retaining lever 25. When the impression is; on this lever enggges tooth 23, as 1 shown in Figs. -1 and 3, hen the impression is tripped, the partial turning of shaft 6 places the notch of ratchet-16 in such position 'relativel to the notch of ratchet 2 (see. Figs). that the. two ratchets prev nt he ec mg pa l.

peripheries of the I,

from entering the notch of either ratchet. \Yhen it is desired to restore the impress1on the retaining lever 25 is moved as against the tension'of its spring 26 to clear the'tooth 23 of the loose ratchet, and therebyallow the the'latter to turn under the infiuence of its-spring 27 until arrested by the engagement of its tooth 2a with lever .25, as shown Fi 2. The partial turning of the loose rate et relatively to the fixed g'ratchet-.-16 places the notches of the two .ratchets-in line so that the actuating pawl loose ratchet 22 is turned by pawl 15 sufliciently to allow retaining lever to reengage tooth 23 thereof, as shown in Fig.

' "3. the parts are in this position the reciprocation of the pawl 15 has no effect oneither- 0f the ratchets; and likewise after I the impression has been tripped the pawl :25

is" precluded from effectively entering the notches of the ratchets as long as. the loose ratchet is retained by lever 25 in the position-shown in Fig. 4:; and it is not until w the loose ratchet is permitted to turn relatively to the fixed ratchet that the pawl is allowed to enter the notches of both ratchets to throw on the impression.

' From what has been. said it will be seen that the impression is untripped by the power 'of the machine, but that in order to effect this result it is necessary to first man- I ually actuate the retaining lever to release it from the loose ratchet which normally prevents the pawl from having any effect on .the spring-impelled shaft after the impression has-been tripped, except when it is desired to restore or untrip the impression, and in moving the parts for this purpose the tripping of the impression until the-operator. claim as my 1nvent1on-:--

loose ratchet is restored to its normal position wherein it will prevent a subsequent undesired by '1. In a printing press having a printing "comprisinga shaft, a constantly-operating couple. means for untripping the impression device for turning such shaft to untrip the impression, an element for normally render- 111g such device ineffective to turn said with which the latter is caused to automatishaft, and holding means for said element cally reengage when said device untrips the impression.

2. In a printing. press having a prlnt ng couple. means for untrip gingthe impression comprising a shaft, a sisnstantly-opera ting device for turning such shaft to untrip jthe impression, an element for normally rendering such device inefieetive to turn said shaft,

and holding. means for said element with which the latter is caused to automatically reengage by said device when it untrips the impression.

In a printing press having a printing couple, means for tripping and untripping the impression comprising a spring-impelled shaft, a constantly-operating element foi' actuatingsaid shaft to restore or untrip the impression, and manually-controlled means for normally rendering such element ineffective to turn said shaft.

shaft, a constantly-operating element for turning said shaft in opposition to the spring to untrip the impression, and means for normally rendering such element ineffective .to turn said shaft.

6. In a printing press having a printing couple, means for automatically tripping the impression comprising a spring-impelled shaft, a constantly-operating element for turning said shaft in opposition to the spring to untrip the impression, and manually-controlled means for normally rendering such element ineffective to turn said shaft.

7. In a printing press having a printing couple, means for throwing on the impression comprising a shaft, a ratchet fixed on said shaft, a constantly-reciprocating pawl for engaging said ratchet to turn said shaft to untrip the impression, a second ratchet loose on said shaft for normally preventing said pawl from turning said fixed ratchet, and holding means for said loose ratchet with which it is caused to automatically reengage in untripping the impression.

8. In a printing press having a printing couple, means for throwing on the impression comprising a shaft, a ratchet fixed on said, shaft, a constantly-reciprocating pawl for engaging said ratchet to turn said shaft to untrip the impression, a second ratchet loose on said shaft for normally presenting said pawl from turning said fixed ratchet, a

spring tending to turn said loose ratchet to allow said pawl to turn said fixed ratchet, and means for holding said loose ratchet, said. loose ratchet being turned as against said spring when the pawl turns the fixed ratchet.

9. In a printing press having a printing couple, means for throwing on the impression comprising a shaft, a ratchet fixed on said shaft, a 'constantly-reciprocating pawl for engaging said ratchet to turn said shaft to 'untripthe impression, a second ratchet loose on said'shaftfor normally preventing said pawl-from turning said fixed ratchet,

and a lever for holding said loose ratchet in difierent positions.

10. In a printing press having a printing couple, means for throwing on the impression comprising a shaft, a ratchet hired on said shaft and having a single notch, a constantly-reciprocating pawl for entering said notch, a second ratchet havlng a single notch which when coincident with the notch of the fixed ratchet will permit the pawl to enter the latter notch, and means for normally holding said loose ratchet to render said pawl ineflfective.

11. In a printing press having a printing couple, means for throwing on the impression comprising a shaft, a ratchet fixed on said shaft and having a single notch, a Constantly-reciprocating pawl for entering said notch, asecond ratchet havlng a single notch which when coincident with the notch of the fixed ratchet will permit the pawl to enter the latter notch, said loose ratchet being spring-controlled and having teeth in' its periphery, and a controlling lever for engaging said teeth to hold the loose ratchet in different positions.

12. In a printing press having a printing couple comprising a rotary cylinder, means for untripping the impression comprising an element actuated once to each cycle of revo lution of said cylinder, a spring-impelled ing witnesses.

- WALTER H. SMITH.

' Witnesses:

FRANCIS S. MAGUIRE, 1 J NOIA MGGILL. 

